Daikin REYQ72 Serveice Manual

Also see for BSVQ36MVJU: Installation manual Serivce manual Service manual Design, Installation & Testing Instruction

Contents

Daikin REYQ72 Serveice Manual Manual pdf 248 page image

SiUS39-602 Example of Connection (R-410A Type)Appendix 2375.2 Example of connectionOne outdoorunit installedBranch with REFNET joint Branch with REFNET joint and REFNET header Branch with REFNET headeraA B C D E F GA B C D E F Gb c d e f gh i j k l m n1 2 3 4 5 6 78H2H1POutdoor unit REFNET joint ( - )Indoor units ( - )H1H1H2H2a aiba ibc d e f g h1 2 3 4 5 6Outdoor unitOutdoor unitREFNET joint ( • )Indoor units ( - )c d e f g h1 2 3 4 5 6Indoor units ( - )REFNET headerREFNET headerkj7 8kj7 8H1H2H2Outdoor unit REFNET headerIndoor units ( - )c d e f g h iib 1 2 3 4 5 6 788a b c d e f g8H2H1H3 H3PIndoor units ( - )Outdoor unit REFNET joint ( - ) REFNET joint ( • )h i j k l m n1 2 3 4 5 6 7First outdoorbranchH1H3aOutdoor unitREFNET headerIndoor units ( - )c d e f g hb 1 2 3 4 5 6 7Multiple outdoorunits installed∗ In case of multiple outdoor units installed, re-read tothe first outdoor branch as seen from the indoor unit.MaximumallowablelengthBetween outdoorand indoor unitsBetween outdoor branch and indoor unit(Only for multiple outdoor units)Between outdoor and indoor unitsBetween indoor and indoor unitsBetween outdoor and outdoor unitsActual pipe lengthActual pipe lengthActual pipe lengthDifference in heightDifference in heightDifference in heightEquivalent lengthTotal extension lengthPipe length between outdoor and indoor units ≤ 490ft.Example unit 8: a + b + c + d + e + f + g + p ≤ 490ft.Example unit 8: b + c + d + e + f + g + p ≤ 130ft.Equivalent pipe length between outdoor and indoor units ≤ 575ft. (assume equivalent pipe length of REFNET joint to be 1.6ft., that of REFNET header to be 3.3ft. calculation purposes)Piping length from outdoor branch to outdoor unit ≤ 33ft. Approximately length: max 43ft.Difference in height between outdoor and indoor units (H1) ≤ 164ft. (Max 130ft. if the outdoor unit is below)Difference in height between adjacent indoor units (H2) ≤ 49ft.Difference in height between outdoor unit (main) and outdoor unit (sub) (H3) ≤ 16ft.Pipe length from first refrigerant branch kit (either REFNET joint or REFNET header ) to indoor unit ≤ 130ft.Total piping length from outdoor unit* to all indoor units ≤ 950ft.AllowableheightlengthAllowable length after the branchRefrigerant branch kit selectionPipe size selectionExample unit 8: a + i ≤ 490ft.Example unit 6: a + b + h ≤ 330ft., unit 8: a + i + k ≤ 490ft.Example unit 8: i ≤ 130ft.Example unit 6: b + h ≤ 130ft., unit 8:i + k ≤ 130ft.rtOutdoor unitr ≤ 33ft. (Approximately length: max 43ft.)t ≤ 33ft. (Approximately length: max 43ft.)Refrigerant branch kits can only beused with R-410A.How to select the REFNET joint• When using REFNET joints at the first branch counted from the outdoor unit side, choose from the following tablein accordance with the capacity of the outdoor unit.Piping between outdoor units and refrigerant branch kit (part A)• Match to the size of the connection piping on the outdoor unit.Outdoor unit connection piping sizePiping between refrigerant branch kits• Choose from the following table in accordance with the total capacity of all theindoor units connected below this.• Do not let the connection piping exceed the refrigerant piping size chosen bygeneral system model name.How to calculate the additional refrigerantto be chargedIf a negative result is gotten for R from the formula at right, no refrigerantneeds to be added.Additional referigerant to be charged R (lb.)R should be rounded off in units of 0.1 (lb.).Piping between outdoorbranch and outdoor unit (part B)Oil-equalizing line (part C)Piping between outdoor units and refrigerantbranch kit (part A)REYQ72/96REYQ144/168/192KHRP26M22T, KHRP26M33TKHRP26M22T, KHRP26M33T, KHRP26M72TU• For REFNET joints other than the first branch, select the proper branch kit model based on the total capacityindex.< 7272 ≤ x < 111111 ≤KHRP26M22TKHRP26M33TKHRP26M72TUHow to select the REFNET header• Choose from the following table in accordance with the total capacity of all the indoor units connected below the REFNETheader.< 72< 111111 ≤KHRP26M22H (Max. 4 kit)KHRP26M33H (Max. 8 kit)KHRP26M72H (Max. 8 kit)In case of multiple outdoor units installed, use outdoor branch kit.2 units BHFP22M90Uexample in case of REFNET joint C; indoor units 3 + 4 + 5 + 6 + 7 + 8 example in case of REFNET joint B indoor units 7 + 8,example in case of REFNET header; indoor units 1 + 2 + 3 + 4 + 5 + 6 example in case of REFNET header; indoor units 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8Example of downstream indoor unitsREYQ72REYQ96REYQ144/168/192φ3/4φ7/8φ1-1/8φ3/8φ3/8φ5/8 Gas pipeindoor capacity index Piping sizeLiquid pipeφ3/8φ1/2φ5/8< 7272 ≤ x < 111111 ≤ x < 156156 ≤φ5/8φ7/8φ1-1/8Between refrigerant branch kit and indoor unit• Pipe size for direct connection to indoor unit must be the same as theconnection size of indoor unit.φ1/4φ3/807, 09, 12, 18 type24, 30, 36, 48 typeφ1/2φ5/8Piping between outdoor branch and outdoor unit (part B)Gas pipeoutdoor capacity type Piping sizeLiquid pipeφ3/8φ3/8REYQ72REYQ96φ3/4φ7/8a: φ3/4 × 100ft.b: φ5/8 × 30ft.c: φ3/8 × 30ft.d: φ3/8 × 30ft.e: φ3/8 × 30ft.f : φ3/8 × 30ft.g: φ1/4 × 30ft.h: φ1/4 × 70ft.i : φ1/2 × 30ft.j : φ1/4 × 30ft.k: φ1/4 × 25ft.Oil-equalizing line (Only for multiple outdoor units installed) (part C)φ1/4Piping size(Unit: in.)(Unit: in.)(Unit: in.)(Unit: in.)(Unit: in.)R= +indoor capacity index Refrigerant branch kit nameNumber of outdoor units Branch kit nameOutdoor unit capacity type Refrigerant branch kit nameindoor capacity index Refrigerant branch kit nameGas pipeOutdoor unit capacity type Piping sizeLiquid pipeGas pipeindoor capacity type Piping sizeLiquid pipe+ ++ + _If the outdoor unit isREYQ192 units and thepiping lengths are as atrightR= 100 0.168 + 30 0.014 + 30 0.074 + 120 0.036 + 155 0.015 - 6.6 =22.485ba c+d+e+f g+h+j+ki 22.5NOTE:Total length (ft.)of liquid pipingsize at φ7/8 × 0.235Total length (ft.)of liquid pipingsize at φ3/4 × 0.168Total length (ft.)of liquid pipingsize at φ5/8 × 0.114Total length (ft.)of liquid pipingsize at φ1/2 × 0.074Total length (ft.)of liquid pipingsize at φ3/8 × 0.036Total length (ft.)of liquid pipingsize at φ1/4 × 0.015Model nameREYQ72/96REYQ144/168/1920 lb.6.6 lb.Amount of refrigerantExample for refrigerant branch using REFNET joint and REFNET header for REYQ192A BA BCautionThe thickness and material shall be selected in accordance with local code.For an outdoor unit multi installation, make the settings in accordance with thefollowing figure.A G1 8 1 81 8A BA B1 8indoor unitREFNET jointREFNET header1AA G1 81 8